Phasor Diagrams in AC Circuits
Trending Questions
Q. The vector diagram of current and voltage for a circuit is as shown. The components of the circuit will be
- LCR
- LR
- LCR or LR
- LC
Q. In a pure inductive circuit or In an ac circuit containing inductance only, the current
- Leads the e.m.f. by 90∘
- Lags behind the e.m.f. by 90∘
- Sometimes leads and sometime lags behind the e.m.f.
- Is in phase with the e.m.f.
Q. When two 3 microfarad capacitors are connected in parallel, the resultant capacitance in microfarad is,
- 6
- 4.5
- 1.5
- 12
Q. Two particle executing S.H.M. of same amplitude of 20 cm with same period along the same line about same
equilibrium position. The maximum distance between the two is 20 cm. Their phase difference in radian is equal
to
(1) 3
π
(2) 2
π (3)
2
3
π
(4)
4
5
π
Q. . Vibrations of rope tied by two rigid ends shown by equation y = cos 2πt sin 2πx, then minimum length of the rope will be
(a) 1 m
(b) 1/2m
(c) 5 m
(d) 2 π m
Q. The diagram shows a capacitor C and a resistor R connected in series to an ac source. V1 and V2 are voltmeters and A is an ammeter
Consider now the following statements
1) Readings in A and V2 are always in phase
2) Reading in V1 is ahead in phase with reading in V2
3) Readings in A and V1 are always in phase which of these statements are / is correct
Consider now the following statements
1) Readings in A and V2 are always in phase
2) Reading in V1 is ahead in phase with reading in V2
3) Readings in A and V1 are always in phase which of these statements are / is correct
- I only
- II only
- I and II only
- II and III only
Q. . Vibrations of rope tied by two rigid ends shown by equation y = cos 2πt sin 2πx, then minimum length of the rope will be
(a) 1 m
(b) 1/2m
(c) 5 m
(d) 2 π m